TestUnmodifiableList.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.apache.commons.collections.list;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

import junit.framework.Test;
import junit.framework.TestSuite;

/**
 * Extension of {@link AbstractTestList} for exercising the 
 * {@link UnmodifiableList} implementation.
 *
 * @since Commons Collections 3.0
 * @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
 * 
 * @author Phil Steitz
 */
public class TestUnmodifiableList extends AbstractTestList {
    
    public TestUnmodifiableList(String testName) {
        super(testName);
    }
    
    public static Test suite() {
        return new TestSuite(TestUnmodifiableList.class);
    }
    
    public static void main(String args[]) {
        String[] testCaseName = { TestUnmodifiableList.class.getName()};
        junit.textui.TestRunner.main(testCaseName);
    }

    //-----------------------------------------------------------------------    
    public List makeEmptyList() {
        return UnmodifiableList.decorate(new ArrayList());
    }
    
    public List makeFullList() {
        ArrayList list = new ArrayList();
        list.addAll(Arrays.asList(getFullElements()));
        return UnmodifiableList.decorate(list);
    }
    
    public boolean isSetSupported() {
        return false;
    }
    
    public boolean isAddSupported() {
        return false;
    }
    
    public boolean isRemoveSupported() {
        return false;
    }
    
    //-----------------------------------------------------------------------    
    protected UnmodifiableList list = null;
    protected ArrayList array = null;
    
    protected void setupList() {
        list = (UnmodifiableList) makeFullList();
        array = new ArrayList();
        array.add(new Integer(1));
    }
    
    /** 
     * Verify that base list and sublists are not modifiable
     */
    public void testUnmodifiable() {
        setupList();
        verifyUnmodifiable(list); 
        verifyUnmodifiable(list.subList(0, 2));
    } 
        
    protected void verifyUnmodifiable(List list) {
        try {
            list.add(0, new Integer(0));
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        } 
        try {
            list.add(new Integer(0));
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.addAll(0, array);
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.addAll(array);
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.clear();
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.remove(0);
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.remove(new Integer(0));
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.removeAll(array);
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.retainAll(array);
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
        try {
            list.set(0, new Integer(0));
             fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }
    
    /**
     * Verify that iterator is not modifiable
     */
    public void testUnmodifiableIterator() {
        setupList();
        Iterator iterator = list.iterator();
        try {
            Object obj = iterator.next();
            iterator.remove();
            fail("Expecting UnsupportedOperationException.");
        } catch (UnsupportedOperationException e) {
            // expected
        }
    }

    public String getCompatibilityVersion() {
        return "3.1";
    }

//    public void testCreate() throws Exception {
//        resetEmpty();
//        writeExternalFormToDisk((java.io.Serializable) collection, "D:/dev/collections/data/test/UnmodifiableList.emptyCollection.version3.1.obj");
//        resetFull();
//        writeExternalFormToDisk((java.io.Serializable) collection, "D:/dev/collections/data/test/UnmodifiableList.fullCollection.version3.1.obj");
//    }

}